Conducting Social Engineering Pretext Call

# Conducting Social Engineering Pretext Call

## Overview

A pretext call (vishing) is a social engineering technique where an attacker impersonates a trusted authority figure over the phone to manipulate targets into divulging sensitive information, performing actions, or granting access. In red team engagements, pretext calls test the human element of security controls, measuring employee adherence to verification procedures and security awareness training effectiveness. MITRE ATT&CK maps this to T1566.004 (Phishing for Information: Voice) and T1598 (Phishing for Information).


## When to Use

- When conducting security assessments that involve conducting social engineering pretext call
- When following incident response procedures for related security events
- When performing scheduled security testing or auditing activities
- When validating security controls through hands-on testing

## Prerequisites

- Written authorization specifying social engineering scope and boundaries
- List of approved target employees (usually provided by client)
- OSINT research on targets and organization
- Spoofed caller ID capability (authorized for testing)
- Call recording equipment (with legal consent as required)
- Pretext scenarios approved by client

## MITRE ATT&CK Mapping

| Technique ID | Name | Tactic |
|---|---|---|
| T1566.004 | Phishing: Voice | Initial Access |
| T1598 | Phishing for Information | Reconnaissance |
| T1598.003 | Phishing for Information: Spearphishing Voice | Reconnaissance |
| T1589 | Gather Victim Identity Information | Reconnaissance |
| T1591 | Gather Victim Org Information | Reconnaissance |

## Phase 1: OSINT and Target Research

```bash
# LinkedIn employee enumeration
theHarvester -d targetcorp.com -b linkedin -l 200

# Company org chart and employee roles
# Review LinkedIn, corporate website "About Us" / "Team" pages

# Technology stack identification
# Check job postings for technology references (VPN vendor, email, helpdesk tool)

# Phone system identification
# Call main line, note IVR options, department names, extension patterns
```

Key intelligence to gather: